Shade-locking device.



No. 793,196. PATENTED JUNE 27, 1905. H. HUBBELL.

SHADE LOCKING DEVICE.

APPLICATION FILED SEPT. 7, 1904.

INVEN OR m FNITED STATES Patented June 2'7, 1905.

HARVEY HUBBELL, OF BRIDGEPOR'I, CONNEG"ICU'I.

SHADE-LOCKING DEVICE.

SPECIFICATION forming part of Letters Patent No. 793,196, dated June 2'7, 1905. Application filed September 7,1904. Serial No. 223,670.

To r/Z/ u'lmm/ it Duty concern:

Be it known thatI, HARvnYHUBBnLL, a citizen of the United States, and a resident of Bridgeport, in the county of Fail-field and State of Connecticut, have invented certain new and useful Improvements in Shade-Holdassembled in an-instants time by unskilled operatives.

With these ends in vlewl have devised the simple and novel shade-holder of which the following description, in connection with the accompanyingdrawings, is a specification, reference characters being used to indicate the several parts.

Figure 1 is an elevation of my novel shadeholder as in use retaining a shade; Fig. 2, a

horizontal section of the holder and shade, on an enlarged scale, on the line 2 2 in Fig. 3, the spring locking-clamp appearing in plan; and Fig. 3 is a vertical section of the holder, shade, and spring locking-clamp on the line 3 3 in Fig. 2.

1 denotes an ordinary incandescent lamp shade or reflector having attaching means, as an external circumferential groove 2, near its smaller end.

3 denotes the holder, which is made of sheet metal and which receives and incloses the attaching end of the shade. The holder is provided with an internal circumferential groove 7, with which groove 2 in the shade registers when in the assembled position.

6 denotes a slot in the bottom of groove 7, and 12 and 13 other slots, which are shown as approximately equidistant from each other and from slot 6.

11 denotes a depression or slotin the present instance a depression-in the bottom of groove 7 near slot 6.

Instead of open slots 12 and 13 in the bottom of grooves T depressions similar to depressions 11 may be formed, if preferred, it being simply required that the depressions be made deep enough to receive projections on the spring locking-clamp and permit the necessary outward expansion thereof when it is moved to the unlocking position, as will be more fully explained.

f denotes the oscillatory spring lockingclamp, which is formed from a piece of wire, is outwardly expanding, and is adapted to engage groove 7 in the holder and groove 2 in the shade. In the present instance round wire is used, although that is wholly immaterial, so far as the principle of the invention is concerned, as angular wire may be used, if preferred. The general configuration of the spring locking-clamp will be clearly understood from Fig.2. ltis provided with a loop or handpieee 5, which in the assembled position extends through slot 6 in the holder for convenience in oscillating the locking-clamp, as will be more fully explained. Near the loop or handpiece is an outward locking bend or projection 10, shown as formed by lmnding the wire of thc locking-claim), which isadapted to engage depression or slot 11 in the bottom of groove 7. b and 9 denote other projections or bends of the locking-clamp near its free ends, which in the unlocking position of the clamp pass into slots or depressions 12 and 13, respectively, in the bottom of slot '7.

The operation is as follows: In order that a shade may be placed in the holder, the spring locking-clamp is oscillated to the position shown in dotted lines in Fig. 2, in which position projections 8 and 9 on the spring lockingclamp will lie in slots or depressions 12 and 13 in the holder, and projection 10 on the spring locking clamp, as well as loop or handpiece 5, will lie in slot 6 in the holder. This will permit the spring locking-clamp, through the outward expansion of the wire of which it is formed, to lie closely in the groove in the holder, so that the attaching end of the shade may be readily passed into the holder and groove 2 in the shade placed in alinement with groove 7 in the holder. The

locking of the shade to the holder is effected by oscillating the clamp by means of the loop or handpiece from the position shown in dotted lines in Fig. 2 toward the left to the position shown in full lines in said figure. This movement of the locking-clamp will force projections 8 and 9 thereon out of the slots or depressions 12 and 13 and into the circumferential groove 7 of the holder. Theengagem'ent of these projections with the bottom of the groove will compress the spring locking-clamp inward, so that it will be forcedinto groove 2 in the shade to lock the latter to the holder. When the spring locking-clamp has been moved to the locking position, it is retained there to prevent accidental movement and the possible detachment of the shade through the engagement of projection 10 on the clamp with depression or slot 11 in the bottom of the groove in the holder, from which engagement the depression cannot be unseated without exerting considerable force or pressure upon the loop or handpiece in the direction of the arrow a in Fig. 2. To detach the shade, it is simply necessary to apply suflicient force or pressure to the loop or handpiece to move it from the position shown in full lines to the position shown in dotted lines in Fig. 2, in which position of the parts projections 8 and 9 upon the locking-clamp will drop into slots or depressions 12 and 13 in the holder again and the locking-clamp will expand outward into the groove in the holder, thereby releasing the shade, which may be removed. The shade may be again locked to the holder by a simple oscillation of the locking-clamp toward the left from the position shown in dotted lines in Fig. 2, the operation of looking a shade to a holder or unlocking it being performed in very much less time than it takes to describe it.

While I have described the clamp as movable toward the right or left between the pov sitions indicated by full and dotted lines in Fig. 2, it will be readily understood that the movement of the clamp is relative to the holder 3, for if the handle 5 of the clamp were to be firmly held the same looking or unlocking operation could be performed by sliding the holder 3 about the clamp. The holder 3 incloses the clamp, and the expanding and contracting movements of the portions of the clamp are controlled by oscillatory movement of either the inclosing member 3 or the clamp relatively to the other. Of course the contracting movements of the sides of the clamp are caused by the cam motion of the ends of the slots or recesses of the inclosing member upon the ends of the outward bends or projections 8, 9, and 10 of the clamp.

in said guideway to oscillate relatively thereto, said shoulders resting in said openings when the wire is in one position, and being forced inwardly to cause the wire to engage the shade when the wire is oscillated to another position.

2. A shade holder comprising a holder adapted to receive a shade and having an internal circumferential groove and an outwardly-expanding locking-clamp comprising a single piece of wire adapted to lie in said groove and to engage a shade, said groove being open inwardly to present no obstruction to movement of all portions of the wire toward the shade, said locking-clamp being provided with means whereby engagement with a shade is effected by contact with the holder when the locking-clamp is oscillated in one direction and means for retaining said locking-clamp in the locking position, and said holder being provided with means which permit said locking-clamp to be disengaged from the shade when it is oscillated in the opposite direction.

3. A shade-holder comprising a holder having an internal circumferential groove and slots or depressions in the line of said groove and an outwardly-expanding clamp loosely supported in the groove and having projections and a locking projection adapted to engage said slots or depressions in the holder, so that when the clamp is oscillated in one direction the projections will pass into said slots or depressions and permit the clamp to expand outward to release the shade, and the locking projection will pass out of a slot or depression, and when the clamp is oscillated in the opposite direction, projections thereon will be moved out of slots or depressions and into the groove in the holder to secure the shade, and the locking projection will pass into a slot or depression to retain the clamp in the locking position.

Signed at Bridgeport, in the county of Fairfield and State of Connecticut, this 6th dayof September, A. D. 1904.

HARVEY HUBBELL.

Witnesses: V

WM. WV. WATERMAN, GEO. D. PHrLnIrs. 

